Donut Symbol.

[Blammo]

Jeff,

I tried that already.

What I'm basically after is a sysmbol that is a empty circle with a 
thickness aplied to the line.  Ideally it would be a symbol like 
anyother that I could apply a COLOR and OUTLINECOLOR to.

Paco's idea of the close "u" shap would work if I didn't need to outline it.

I also ran into another slight problem as well (may Paco has some ideas 
about this too.)

I was trying to use this symbol as a distance measuring tool.  but 
seemed to run into a snag with a size limit.   I couldn't get the symbol 
to go over a certain pixel size.   The circle is supposed to represent  
a distance buffer in miles (ground units).

If I zoom in too close, the symbol won't get any larger than a certain 
size,  about 500 pixels I would guess.   I actually have three of these 
symbols stacked on top of each other for different distances.   But the 
size of the symbol grow as I zoom in, but once I hit this max pixel 
size, the sysbol stop growing at this approx 500 pixel size.

Thanks

bobb



Jeff Portwine wrote:

>I haven't tried this , so it may not work, I've always used filled in 
>shapes.. but couldn't you just use a non-filled in circle:
>
>SYMBOL
>  NAME "circle"
>  TYPE ellipse
>  FILLED false
>  POINTS
>    1 1
>  END
>END
>
>and then set its size appropriately?   I'm not sure if there is a good way 
>to affect the thickness though, other than stacking several of them with 
>varying sizes.
>
>-Jeff
>
>----- Original Message ----- 
>From: "Bob Basques" <bob.basques at CI.STPAUL.MN.US>
>To: <MAPSERVER-USERS at LISTS.UMN.EDU>
>Sent: Thursday, August 25, 2005 5:39 PM
>Subject: [UMN_MAPSERVER-USERS] Donut Symbol.
>
>
>  
>
>>Does anyone know of a good way to make a donut symbol.
>>
>>I need to be able to resize a symbol that is basically a donut.  Where the 
>>donut part is semi-opaque, and the center is open.  It's basically a 
>>min/max distance from a point overlay.  I have the dynamic handing off of 
>>the sizing handled already, but haven't figured out a good way to make a 
>>filled donut symbol.
>>
>>I did mange to make a stacked symbol, but I would really like to have the 
>>center no be filled in, only the area between the MIN/MAX distance from 
>>the point picked.
>>
>>Thanks
>>
>>bobb
>>
>>    
>>
>
>
>  
>

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